I'm having difficult parsing a simpleXml string to get a value out. I've tried


Code:
$xml = new SimpleXmlElement($simpleXml);
    
    $xml->registerXPathNamespace("ns0", "http://www.openapplications.org/oagis");
    foreach($xml->xpath('//ns0:applicationarea/a:sender') as $n) {
      echo $n->creationdatetime . "success";
    }
To get the creationdatetime field, but this is not returning anything for me. I'm familiar with parsing simple xml, but the namespaced xml throws me difficulty, especially because all examples always have namespaced xml embedded, rather than the whole thing being namespaced.

Code:
    <ns0:syncparty xmlns:ns0="http://www.openapplications.org/oagis" revision="1.0" environment="Production" lang="en-US">
    <ns0:applicationarea>
        <ns0:sender>
            <ns0:authorizationid>QPIM</ns0:authorizationid>
        </ns0:sender>
        <ns0:creationdatetime>2012-11-12T09:58:32.257-08:00</ns0:creationdatetime>
    </ns0:applicationarea>
    <ns0:dataarea>
        <ns0:sync>
            <ns0:synccriteria expressionlanguage="XPath">
                <ns0:syncexpression action="Sync">GetContact</ns0:syncexpression>
            </ns0:synccriteria>
        </ns0:sync>
        <ns0:party active="false" onetime="false">
            <ns0:contacts>
                <ns0:primarycontact>
                    <ns0:person>
                        <ns0:personcode>409090</ns0:personcode>
                        <ns0:personname>
                            <ns0:givenname>Erik</ns0:givenname>
                            <ns0:familyname>Sparrow</ns0:familyname>
                            <ns0:userarea>
                        </ns0:userarea></ns0:personname>
                        <ns0:userarea>
                    </ns0:userarea></ns0:person>
                    <ns0:qctelex>
                    <ns0:emailaddress>artest02@qcomtest.com</ns0:emailaddress>
                    <ns0:addresses>
                        <ns0:primaryaddress>
                            <ns0:country>UNITED STATES</ns0:country>
                            <ns0:qccountrycode>
                                <ns0:qcccode>US</ns0:qcccode>
                            </ns0:qccountrycode>
                            <ns0:userarea>
                        </ns0:userarea></ns0:primaryaddress>
                    </ns0:addresses>
                    <ns0:userarea>
                        <ns0:property>
                            <ns0:namevalue name="reg_id">172914</ns0:namevalue>
                            <ns0:description>QPIM Registration Id</ns0:description>
                        </ns0:property>
                        <ns0:property>
                            <ns0:namevalue name="qcOldDN">N/A</ns0:namevalue>
                            <ns0:description>QPIM Rename Values</ns0:description>
                        </ns0:property>
                        <ns0:useraccount>
                            <ns0:systemid>artest02@qcomtest.com</ns0:systemid>
                            <ns0:authorization>
                                <ns0:id>422</ns0:id>
                                <ns0:type>bus_role</ns0:type>
                                <ns0:status>
                                    <ns0:code>A</ns0:code>
                                    <ns0:change>
                                        <ns0:changedate>2012-02-06T11:20:34-08:00</ns0:changedate>
                                        <ns0:userarea>
                                            <ns0:property>
                                                <ns0:namevalue name="UPDATED_BY">QPIM</ns0:namevalue>
                                            </ns0:property>
                                        </ns0:userarea>
                                    </ns0:change>
                                </ns0:status>
                                <ns0:dateauthorized>2012-02-06T11:20:34-08:00</ns0:dateauthorized>
                                <ns0:authorizationcode>CRD_AR</ns0:authorizationcode>
                                <ns0:userarea>
                                    <ns0:property>
                                        <ns0:namevalue name="CREATED_BY">QPIM</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                        <ns0:namevalue name="DESCRIPTION">Provisioning Role for CRD_AR</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                        <ns0:namevalue name="TAG">ar</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                        <ns0:namevalue name="OWNER_ID">484</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                        <ns0:namevalue name="OWNER_NAME">CRD_Admins</ns0:namevalue>
                                    </ns0:property>
                                </ns0:userarea>
                            </ns0:authorization>
                            <ns0:authorization>
                                <ns0:id>402</ns0:id>
                                <ns0:type>bus_role</ns0:type>
                                <ns0:status>
                                    <ns0:code>A</ns0:code>
                                    <ns0:change>
                                        <ns0:changedate>2012-07-18T13:55:41-07:00</ns0:changedate>
                                        <ns0:userarea>
                                            <ns0:property>
                                                <ns0:namevalue name="UPDATED_BY">arsrvc</ns0:namevalue>
                                            </ns0:property>
                                        </ns0:userarea>
                                    </ns0:change>
                                </ns0:status>
                                <ns0:dateauthorized>2012-07-18T13:55:41-07:00</ns0:dateauthorized>
                                <ns0:authorizationcode>CRD_Alpha</ns0:authorizationcode>
                                <ns0:userarea>
                                    <ns0:property>
                                        <ns0:namevalue name="CREATED_BY">arsrvc</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                        <ns0:namevalue name="DESCRIPTION">Provisioning role for CRD_ALPHA</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                        <ns0:namevalue name="TAG">alpha</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                        <ns0:namevalue name="OWNER_ID">484</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                        <ns0:namevalue name="OWNER_NAME">CRD_Admins</ns0:namevalue>
                                    </ns0:property>
                                </ns0:userarea>
                            </ns0:authorization>
                            <ns0:authorization>
                                <ns0:id>22</ns0:id>
                                <ns0:type>policy_role</ns0:type>
                                <ns0:status>
                                    <ns0:code>A</ns0:code>
                                    <ns0:description>Approved</ns0:description>
                                    <ns0:change>
                                        <ns0:changedate>2012-02-06T11:20:43-08:00</ns0:changedate>
                                        <ns0:userarea>
                                            <ns0:property>
                                                <ns0:namevalue name="UPDATED_BY">QPIM_VALID_DPL</ns0:namevalue>
                                            </ns0:property>
                                        </ns0:userarea>
                                    </ns0:change>
                                </ns0:status>
                                <ns0:dateauthorized>2012-02-06T11:20:34-08:00</ns0:dateauthorized>
                                <ns0:authorizationcode>QPIM_VALID_DPL</ns0:authorizationcode>
                                <ns0:userarea>
                                    <ns0:property>
                                        <ns0:namevalue name="CREATED_BY">QPIM</ns0:namevalue>
                                    </ns0:property>
                                    <ns0:property>
                                
                         
                      TRUNCATED
</ns0:syncparty>